1NT Opening: 12-14 pts, use care with poor 12pts and vulnerable; avoid holding two doubletons; a 5-card minor is fine, avoid a 5 card major suit unless it contains no honour card; stops in 3 suits, you do not need 4. If opponents double, take-out only with ANY 5 card suit and less than 5 pts

Bidding after partner opens 1NT

Stayman enquiry for a major suit; weakness take-outs; bid 3 of major with a 5-card suit and opening values; bid 4 of a major with 6 card major and opening values